Donghoi Kim
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View article: Optimized integration strategies for the PMR-based H2 production with CO2 capture process
Optimized integration strategies for the PMR-based H2 production with CO2 capture process Open
This work develops process options using a novel protonic membrane reformer (PMR) and liquefaction-based CO2 capture process for low-carbon hydrogen production from natural gas. Several hybrid concepts of the PMR and liquefaction process a…
View article: Exploring the technical feasibility of carbon capture onboard ships
Exploring the technical feasibility of carbon capture onboard ships Open
International shipping is crucial for freight transport, but it relies primarily on fossil fuels, contributing 3% of global greenhouse gas emissions. This calls for urgent action to decarbonize the shipping industry. While renewable-based …
View article: Optimal capacity design of amine-based onboard CO2 capture systems under variable marine engine loads
Optimal capacity design of amine-based onboard CO2 capture systems under variable marine engine loads Open
The International Maritime Organization has adopted a strategy aiming for net-zero greenhouse gas emissions from international shipping, prompting various mitigation technologies to comply with this strengthened strategy. Carbon capture te…
View article: Optimal Utilization of Compression Heat in Liquid Air Energy Storage
Optimal Utilization of Compression Heat in Liquid Air Energy Storage Open
Liquid air energy storage (LAES) is regarded as one of the promising large-scale energy storage technologies due to its characteristics of high energy density, being geographically unconstrained, and low maintenance costs. However, the low…
View article: Optimization and analysis of different liquid air energy storage configurations
Optimization and analysis of different liquid air energy storage configurations Open
Energy storage technologies are required to ensure stability of energy systems when the share of renewable energy forms (wind and solar) is increasing. Liquid air energy storage (LAES) is a promising technology for storing electricity with…
View article: Design optimization of small-scale ORC cycles for fluctuating heat source
Design optimization of small-scale ORC cycles for fluctuating heat source Open
Organic Rankine cycles (ORC) are efficient technologies for waste heat recovery (WHR) at low to mid temperatures. For the design of ORC power cycles, several thermodynamic parameters should be considered. A challenge related to small scale…
View article: Techno-economic Analysis of Different Liquid Air Energy Storage Configurations
Techno-economic Analysis of Different Liquid Air Energy Storage Configurations Open
With the increasing use of renewables in energy systems, grid stability becomes a major issue due to the intermittent nature of energy sources such as solar and wind. To compensate for the unstable renewable energy sources, storage technol…
View article: Objective Function Evaluation for Optimization of an Amine-Based Biogas Upgrading and Liquefaction Process
Objective Function Evaluation for Optimization of an Amine-Based Biogas Upgrading and Liquefaction Process Open
Conventionally, liquefied biomethane (LBM) is produced through biogas upgrading followed by a liquefaction process. In the present study, a detailed model for an LBM production plant including amine-based biogas upgrading and liquefaction …
View article: Optimal recovery of thermal energy in liquid air energy storage
Optimal recovery of thermal energy in liquid air energy storage Open
The increasing share of renewables in energy systems requires energy storage technologies to handle intermittent energy sources and varying energy sinks. Liquid air energy storage (LAES) is a promising technology since it has a high energy…
View article: Multi-component Fluid Cycles in Liquid Air Energy Storage
Multi-component Fluid Cycles in Liquid Air Energy Storage Open
With the penetration of renewable energy sources into the energy market, an emerging problem is the energy stability during energy supply and delivery. Energy storage technologies have the ability to overcome the intermittent nature of ene…
View article: Use of exergy efficiency for the optimization of LNG processes with NGL extraction
Use of exergy efficiency for the optimization of LNG processes with NGL extraction Open
In this paper, processes for liquefied natural gas (LNG) production with upstream or integrated natural gas liquids (NGL) removal have been optimized and compared. Since the NGL and LNG production systems use both work and heat to deliver …
View article: Optimization of a dual mixed refrigerant process using a nonsmooth approach
Optimization of a dual mixed refrigerant process using a nonsmooth approach Open
This article uses a nonsmooth flowsheeting methodology to create simulation and optimization models for dual mixed refrigerant processes. New improved operating conditions are obtained using the primal-dual interior-point optimizer IPOPT, …
View article: Organic Rankine Cycle with Pure and Mixed Working Fluids for LNG Cold Energy Recovery
Organic Rankine Cycle with Pure and Mixed Working Fluids for LNG Cold Energy Recovery Open
Liquefied Natural Gas (LNG) contains a large amount of cold exergy, which is normally wasted during the regasification process. Organic Rankine Cycles (ORCs), which have been widely employed for low-temperature waste heat utilization above…
View article: Evaluation and Optimization of Processes in the Liquefied Natural Gas (LNG) Value Chain
Evaluation and Optimization of Processes in the Liquefied Natural Gas (LNG) Value Chain Open
As a cleaner fuel and an intermediate energy source on the way to a carbon-free society, the demand for natural is expected to grow considerably. Consequently, a larger production of liquefied natural gas (LNG) is also required due to its …